这里我用的阿里淘宝的接口

http://ip.taobao.com/service/getIpInfo.php?ip=218.201.8.37

先看看淘宝IP地址库
http://ip.taobao.com/instructions.html

在这里插入图片描述
直接在地址栏输入淘宝接口url请求一下看看效果:
http://ip.taobao.com/service/getIpInfo.php?ip=218.201.8.37

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{
code: 0,
data: {
ip: "218.201.8.37",
country: "中国",
area: "",
region: "重庆",
city: "重庆",
county: "XX",
isp: "移动",
country_id: "CN",
area_id: "",
region_id: "500000",
city_id: "500100",
county_id: "xx",
isp_id: "100025"
}
}

发现不管换啥ip,老是查询的area为空串,county显示xx,怀疑应该是地区area已经不支持查询,区县county可能是查询不到,或者为了保密被官方默认替换为xx?
所以以下测试代码就不获取上面两个参数了

如下测试基于SpringBoot,但是原理都一样

导入fastjson依赖处理json:

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<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.51</version>
</dependency>

创建工具类AddressUtils :

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package com.bhy702.website.common.util;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

public class AddressUtils {

public static String getAddresses(String content, String encodingString){
//调用淘宝API
String urlStr = "http://ip.taobao.com/service/getIpInfo.php";
String returnStr = getResult(urlStr, content,encodingString);
if(returnStr != null){
return returnStr;
}
return null;
}

/**
* @param urlStr
* 请求的地址
* @param content
* 请求的参数 格式如:ip=xxx.xxx.xxx.xxx
* @param encodingString
* 服务器端请求编码。如GBK,UTF-8等
* @return
*/
private static String getResult(String urlStr, String content, String encodingString) {
URL url = null;
HttpURLConnection connection = null;
try {
url = new URL(urlStr);
// 新建连接实例
connection = (HttpURLConnection) url.openConnection();
// 设置连接超时时间,单位毫秒
connection.setConnectTimeout(2000);
// 设置读取数据超时时间,单位毫秒
connection.setReadTimeout(2000);
//是否打开输出流
connection.setDoOutput(true);
//是否打开输入流
connection.setDoInput(true);
//提交方法 POST|GET
connection.setRequestMethod("POST");
//是否缓存
connection.setUseCaches(false);
//打开连接端口
connection.connect();
//打开输出流往对端服务器写数据
DataOutputStream out = new DataOutputStream(connection.getOutputStream());
//写数据,即提交表单 name=xxx&pwd=xxx
out.writeBytes(content);
//刷新
out.flush();
//关闭输出流
out.close();
// 往对端写完数据对端服务器返回数据 ,以BufferedReader流来读取
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), encodingString));
StringBuffer buffer = new StringBuffer();
String line = "";
while ((line = reader.readLine()) != null){
buffer.append(line);
}
reader.close();
return buffer.toString();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if(connection != null){
connection.disconnect();
}
}
return null;
}
}

调用工具类AddressUtils查询ip地理位置信息:

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package com.bhy702.website;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.bhy702.website.common.util.AddressUtils;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest
public class WebsiteApplicationTests {

// 测试类
@Test
public void getAddressByIp(){
// 参数ip
String ip = "218.201.8.37";
// json_result用于接收返回的json数据
String json_result = null;
try {
json_result = AddressUtils.getAddresses("ip=" + ip, "utf-8");
} catch (Exception e) {
e.printStackTrace();
}
//使用fastjson处理json数据
JSONObject json = JSON.parseObject(json_result);
if(json != null) {
String country = json.getJSONObject("data").get("country").toString();
//String area= json.getJSONObject("data").get("area").toString();
String province = json.getJSONObject("data").get("region").toString();
String city = json.getJSONObject("data").get("city").toString();
//String county= json.getJSONObject("data").get("county").toString();
String isp = json.getJSONObject("data").get("isp").toString();


System.out.println("国家: " + country);
//System.out.println("地区: " + area);
System.out.println("省份: " + province);
System.out.println("城市: " + city);
//System.out.println("区/县: " + county);
System.out.println("互联网服务提供商: " + isp);

}else{
System.out.println("数据为null");
}
}
}

运行结果:
在这里插入图片描述